Display device with a plurality of rotatable sleeve elements, each having a plurality of indicia thereon

A writing instrument comprises:

• (a) a lower body portion having first and second ends;
• (b) a writing end extending from said first end of said lower body portion;
• (c) an upper body portion extending axially from said second end of said lower body portion, said upper body portion being tubular and having a dimension;
• (d) an actuation button at the distal end of said upper body portion for controlling said writing end;
• (e) a barrel containing a writing element for said writing end traverses within said upper and lower body portions;
• and
• (f) a plurality of sleeve elements, each sleeve element having a through opening for axially sleeving over said tubular upper body portion, each sleeve element having a plurality of outer surfaces, with each surface having indicia thereon;
• wherein said through opening having an uniform cross-sectional shape of a circle with at least one notch extending beyond the perimeter of said circle, and dimensioned to be slightly larger than said dimension of said upper body portion and wherein each of said notch having a generally isosceles trapezoidal shape with rounded corners such that each sleeve element is frictionally rotatable in a controlled manner around the axis of said upper body portion with ease to display different messages based on the relative positioning of said indicia on said outer surfaces.